ARCELORMITTAL-NY REGISTERED (MT) Institutional Shareholders
ARCELORMITTAL-NY REGISTERED (MT) is currently reported in institutional portfolios tracked by InsiderSet based on the latest available SEC Form 13F filings for the quarter ended June 30, 2026. The institutional investors covered on this page collectively reported approximately $1.43B in MT holdings during the latest filing period.
Dimensional Fund Advisors Lp is currently the largest disclosed institutional shareholder of MT tracked by InsiderSet, reporting ownership valued at approximately $168.01M in its March 31, 2026 SEC Form 13F filing. Based on current market prices and the latest disclosed share count, the position is now estimated to be worth approximately $226.73M, representing an estimated gain of +34.95% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 53% of the total disclosed MT value among the investors covered in this analysis. Major shareholders include Dimensional Fund Advisors Lp, Morgan Stanley, Fmr Llc, and several other long-term asset managers with concentrated positions in ARCELORMITTAL-NY REGISTERED (MT).
This page ranks the largest institutional MT shareholders using publicly disclosed SEC Form 13F data, including reported values, estimated current holding values, portfolio allocation percentages, ownership concentration metrics, and historical holding changes across major hedge funds and investment firms.
Institutional Holders
298
Total Reported Value
$1.43B
Largest Holder
Dimensional Fund Advisors Lp
Largest Position
$168.01M
Insider Transactions (90d)
0
Latest Filing Quarter
Q2 2026
New Institutional Positions
58
Funds Exiting Positions
0
| Name | Investor/Manager | Portfolio % | Quantity | Reported Balance | Current Estimated Value | Gain/loss Since Filing | Estimated Portfolio Performance |
|---|---|---|---|---|---|---|---|
| Dimensional Fund Advisors Lp | 0.03% | 3,232,495 | $168,007,556 | $226,727,199 | +$58,719,643 | +34.95% | |
| Morgan Stanley | 0.01% | 2,007,524 | $104,351,138 | $140,807,733 | +$36,456,595 | +34.94% | |
| Fmr Llc | 0.00% | 1,557,559 | $80,961,931 | $109,247,188 | +$28,285,257 | +34.94% | |
| Blackrock, Inc. | 0.00% | 1,429,558 | $74,308,407 | $100,269,198 | +$25,960,791 | +34.94% | |
| Maple Rock Capital Partners Inc. | 2.39% | 1,414,265 | $73,513,495 | $99,196,547 | +$25,683,052 | +34.94% | |
| Goldman Sachs Group Inc | 0.01% | 1,322,923 | $68,765,525 | $92,789,819 | +$24,024,294 | +34.94% | |
| Bank Of New York Mellon Corp | 0.01% | 1,104,401 | $57,406,769 | $77,462,686 | +$20,055,917 | +34.94% | |
| Bank Of Montreal | 0.02% | 919,456 | $47,793,323 | $64,490,644 | +$16,697,321 | +34.94% | |
| Connor, Clark & Lunn Investment Management Ltd. | 0.11% | 890,458 | $46,286,007 | $62,456,724 | +$16,170,717 | +34.94% | |
| Retirement Systems Of Alabama | 0.12% | 674,150 | $40,597,313 | $47,284,881 | +$6,687,568 | +16.47% | |
| American Century Companies Inc | 0.02% | 746,915 | $38,824,642 | $52,388,618 | +$13,563,976 | +34.94% | |
| Bank Of America Corp | 0.00% | 670,631 | $34,859,401 | $47,038,058 | +$12,178,657 | +34.94% | |
| Northern Trust Corp | 0.00% | 618,135 | $32,130,658 | $43,355,989 | +$11,225,331 | +34.94% | |
| Jane Street Group, Llc | 0.03% | 608,569 | $31,633,417 | $42,685,030 | +$11,051,613 | +34.94% | |
| Man Group Plc | 0.06% | 578,164 | $30,052,965 | $40,552,423 | +$10,499,458 | +34.94% | |
| Royal Bank Of Canada | 0.00% | 441,068 | $22,927,000 | $30,936,510 | +$8,009,510 | +34.93% | |
| Citadel Advisors Llc | 0.01% | 396,857 | $20,628,627 | $27,835,550 | +$7,206,923 | +34.94% | |
| D. E. Shaw & Co., Inc. | 0.02% | 373,275 | $19,402,835 | $26,181,509 | +$6,778,674 | +34.94% | |
| Senator Investment Group Lp | 0.81% | 341,258 | $17,738,591 | $23,935,836 | +$6,197,245 | +34.94% | |
| Qube Research & Technologies Ltd | 0.02% | 336,363 | $17,484,149 | $23,592,501 | +$6,108,352 | +34.94% | |
| Quantinno Capital Management Lp | 0.03% | 335,931 | $17,461,117 | $23,562,200 | +$6,101,083 | +34.94% | |
| Ubs Group Ag | 0.00% | 326,827 | $16,988,468 | $22,923,646 | +$5,935,178 | +34.94% | |
| Bnp Paribas Financial Markets | 0.01% | 288,788 | $15,011,200 | $20,255,590 | +$5,244,390 | +34.94% | |
| Aqr Capital Management Llc | 0.01% | 276,388 | $14,366,656 | $19,385,854 | +$5,019,198 | +34.94% | |
| Causeway Capital Management | Sarah Ketterer | 0.17% | 265,697 | $13,810,907 | $18,635,988 | +$4,825,081 | +34.94% |
| Millennium Management Llc | 0.01% | 247,217 | $12,850,340 | $17,339,800 | +$4,489,460 | +34.94% | |
| Robotti Robert | 1.92% | 236,570 | $12,296,909 | $16,593,020 | +$4,296,111 | +34.94% | |
| Jb Capital Partners Lp | 1.84% | 205,000 | $10,655,900 | $14,378,700 | +$3,722,800 | +34.94% | |
| Cerity Partners Llc | 0.02% | 203,774 | $10,592,164 | $14,292,708 | +$3,700,544 | +34.94% | |
| Capital Wealth Planning, Llc | 0.06% | 199,876 | $10,389,554 | $14,019,303 | +$3,629,749 | +34.94% | |
| Hennessy Advisors Inc | 0.31% | 159,900 | $9,629,178 | $11,215,386 | +$1,586,208 | +16.47% | |
| Albar Capital Partners Llp | 1.50% | 177,793 | $9,241,680 | $12,470,401 | +$3,228,721 | +34.94% | |
| Amanah Holdings Trust | 0.52% | 148,000 | $8,912,560 | $10,380,720 | +$1,468,160 | +16.47% | |
| Bw Gestao De Investimentos Ltda. | 0.40% | 171,149 | $8,896,325 | $12,004,391 | +$3,108,066 | +34.94% | |
| Wellington Management Group Llp | 0.00% | 159,761 | $8,304,377 | $11,205,637 | +$2,901,260 | +34.94% | |
| Creative Planning | 0.01% | 154,983 | $8,056,036 | $10,870,508 | +$2,814,472 | +34.94% | |
| Neuberger Berman Group Llc | 0.01% | 148,408 | $7,602,278 | $10,409,337 | +$2,807,059 | +36.92% | |
| Sei Investments Co | 0.01% | 130,770 | $6,797,783 | $9,172,208 | +$2,374,425 | +34.93% | |
| Charles Schwab Investment Management Inc | 0.00% | 127,693 | $6,637,482 | $8,956,387 | +$2,318,905 | +34.94% | |
| Pointstate Capital Lp | 0.15% | 125,127 | $6,504,101 | $8,776,408 | +$2,272,307 | +34.94% | |
| Xtx Topco Ltd | 0.10% | 112,850 | $5,865,943 | $7,915,299 | +$2,049,356 | +34.94% | |
| Impala Asset Management Llc | 2.64% | 110,887 | $5,670,815 | $7,777,614 | +$2,106,799 | +37.15% | |
| Mmcap International Inc. Spc | 0.48% | 105,870 | $5,503,123 | $7,425,722 | +$1,922,599 | +34.94% | |
| Envestnet Asset Management Inc | 0.00% | 85,124 | $5,125,653 | $5,970,597 | +$844,944 | +16.48% | |
| Qrg Capital Management, Inc. | 0.04% | 83,890 | $5,052,081 | $5,884,045 | +$831,964 | +16.47% | |
| Peak6 Llc | 0.14% | 95,947 | $4,987,325 | $6,729,723 | +$1,742,398 | +34.94% | |
| Mercer Global Advisors Inc | 0.01% | 91,045 | $4,732,542 | $6,385,896 | +$1,653,354 | +34.94% | |
| Raymond James Financial Inc | 0.00% | 86,672 | $4,453,692 | $6,079,174 | +$1,625,482 | +36.50% | |
| Summittx Capital, L.P. | 0.13% | 78,457 | $4,078,195 | $5,502,974 | +$1,424,779 | +34.94% | |
| Arrowstreet Capital, Limited Partnership | 0.00% | 75,105 | $3,903,958 | $5,267,865 | +$1,363,907 | +34.94% |
Frequently asked questions about MT
Who owns the most MT stock?
The largest holders of MT are typically major institutional investors such as asset managers and hedge funds reporting on Form 13F. The table above ranks tracked superinvestors by reported position size using the latest available filings for ARCELORMITTAL-NY REGISTERED (MT).
Is MT widely held by superinvestors?
Many widely followed stocks like MT appear across numerous superinvestor portfolios because of liquidity, index inclusion, and fundamentals. The holder count and table above show how broadly MT is represented among the institutional managers we track.
What do “Current Estimated Value”, “Gain/loss Since Filing”, and “Estimated Portfolio Performance” mean?
Current Estimated Value is reported share quantity from the latest 13F times our most recent split-adjusted U.S. session close. Gain/loss Since Filing is that estimate minus the reported 13F dollar value; Estimated Portfolio Performance is that difference as a percent of the reported value. Green means the estimate is above the filing value; red means below (not purchase cost). If many filers share the same implied filing price per share, the performance % may match across rows. These are not official fund marks or live quotes.